scsi: qedi: Fix TMF tid allocation

qedi_iscsi_abort_work and qedi_tmf_work both allocate a tid then call
qedi_send_iscsi_tmf which also allocates a tid. This removes the tid
allocation from the callers.

Link: https://lore.kernel.org/r/20210525181821.7617-23-michael.christie@oracle.comReviewed-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qedi/qedi_fw.c

@@ -14,7 +14,7 @@
 #include "qedi_fw_iscsi.h"
 #include "qedi_fw_scsi.h"
 
-static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
+static int send_iscsi_tmf(struct qedi_conn *qedi_conn,
 			  struct iscsi_task *mtask);
 
 void qedi_iscsi_unmap_sg_list(struct qedi_cmd *cmd)
@@ -1348,7 +1348,7 @@ static int qedi_wait_for_cleanup_request(struct qedi_ctx *qedi,
 	return 0;
 }
 
-static void qedi_tmf_work(struct work_struct *work)
+static void qedi_abort_work(struct work_struct *work)
 {
 	struct qedi_cmd *qedi_cmd =
 		container_of(work, struct qedi_cmd, tmf_work);
@@ -1361,7 +1361,6 @@ static void qedi_tmf_work(struct work_struct *work)
 	struct iscsi_task *ctask;
 	struct iscsi_tm *tmf_hdr;
 	s16 rval = 0;
-	s16 tid = 0;
 
 	mtask = qedi_cmd->task;
 	tmf_hdr = (struct iscsi_tm *)mtask->hdr;
@@ -1406,6 +1405,7 @@ static void qedi_tmf_work(struct work_struct *work)
 	}
 
 	qedi_cmd->type = TYPEIO;
+	qedi_cmd->state = CLEANUP_WAIT;
 	list_work->qedi_cmd = qedi_cmd;
 	list_work->rtid = cmd->task_id;
 	list_work->state = QEDI_WORK_SCHEDULED;
@@ -1433,15 +1433,7 @@ static void qedi_tmf_work(struct work_struct *work)
 	}
 
 send_tmf:
-	tid = qedi_get_task_idx(qedi);
-	if (tid == -1) {
-		QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
-			 qedi_conn->iscsi_conn_id);
-		goto ldel_exit;
-	}
-
-	qedi_cmd->task_id = tid;
-	qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
+	send_iscsi_tmf(qedi_conn, qedi_cmd->task);
 
 clear_cleanup:
 	clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
@@ -1467,8 +1459,7 @@ static void qedi_tmf_work(struct work_struct *work)
 	clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
 }
 
-static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
-			       struct iscsi_task *mtask)
+static int send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask)
 {
 	struct iscsi_tmf_request_hdr tmf_pdu_header;
 	struct iscsi_task_params task_params;
@@ -1483,7 +1474,6 @@ static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
 	u32 scsi_lun[2];
 	s16 tid = 0;
 	u16 sq_idx = 0;
-	int rval = 0;
 
 	tmf_hdr = (struct iscsi_tm *)mtask->hdr;
 	qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
@@ -1547,10 +1537,7 @@ static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
 	task_params.sqe = &ep->sq[sq_idx];
 
 	memset(task_params.sqe, 0, sizeof(struct iscsi_wqe));
-	rval = init_initiator_tmf_request_task(&task_params,
-					       &tmf_pdu_header);
-	if (rval)
-		return -1;
+	init_initiator_tmf_request_task(&task_params, &tmf_pdu_header);
 
 	spin_lock(&qedi_conn->list_lock);
 	list_add_tail(&qedi_cmd->io_cmd, &qedi_conn->active_cmd_list);
@@ -1562,47 +1549,30 @@ static int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn,
 	return 0;
 }
 
-int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
-			  struct iscsi_task *mtask)
+int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask)
 {
+	struct iscsi_tm *tmf_hdr = (struct iscsi_tm *)mtask->hdr;
+	struct qedi_cmd *qedi_cmd = mtask->dd_data;
 	struct qedi_ctx *qedi = qedi_conn->qedi;
-	struct iscsi_tm *tmf_hdr;
-	struct qedi_cmd *qedi_cmd = (struct qedi_cmd *)mtask->dd_data;
-	s16 tid = 0;
-
-	tmf_hdr = (struct iscsi_tm *)mtask->hdr;
-	qedi_cmd->task = mtask;
+	int rc = 0;
 
-	/* If abort task then schedule the work and return */
-	if ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
-	    ISCSI_TM_FUNC_ABORT_TASK) {
-		qedi_cmd->state = CLEANUP_WAIT;
-		INIT_WORK(&qedi_cmd->tmf_work, qedi_tmf_work);
+	switch (tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) {
+	case ISCSI_TM_FUNC_ABORT_TASK:
+		INIT_WORK(&qedi_cmd->tmf_work, qedi_abort_work);
 		queue_work(qedi->tmf_thread, &qedi_cmd->tmf_work);
-
-	} else if (((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
-		    ISCSI_TM_FUNC_LOGICAL_UNIT_RESET) ||
-		   ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
-		    ISCSI_TM_FUNC_TARGET_WARM_RESET) ||
-		   ((tmf_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) ==
-		    ISCSI_TM_FUNC_TARGET_COLD_RESET)) {
-		tid = qedi_get_task_idx(qedi);
-		if (tid == -1) {
-			QEDI_ERR(&qedi->dbg_ctx, "Invalid tid, cid=0x%x\n",
-				 qedi_conn->iscsi_conn_id);
-			return -1;
-		}
-		qedi_cmd->task_id = tid;
-
-		qedi_send_iscsi_tmf(qedi_conn, qedi_cmd->task);
-
-	} else {
+		break;
+	case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET:
+	case ISCSI_TM_FUNC_TARGET_WARM_RESET:
+	case ISCSI_TM_FUNC_TARGET_COLD_RESET:
+		rc = send_iscsi_tmf(qedi_conn, mtask);
+		break;
+	default:
 		QEDI_ERR(&qedi->dbg_ctx, "Invalid tmf, cid=0x%x\n",
 			 qedi_conn->iscsi_conn_id);
-		return -1;
+		return -EINVAL;
 	}
 
-	return 0;
+	return rc;
 }
 
 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,

drivers/scsi/qedi/qedi_gbl.h

@@ -31,8 +31,7 @@ int qedi_send_iscsi_login(struct qedi_conn *qedi_conn,
 			  struct iscsi_task *task);
 int qedi_send_iscsi_logout(struct qedi_conn *qedi_conn,
 			   struct iscsi_task *task);
-int qedi_iscsi_abort_work(struct qedi_conn *qedi_conn,
-			  struct iscsi_task *mtask);
+int qedi_send_iscsi_tmf(struct qedi_conn *qedi_conn, struct iscsi_task *mtask);
 int qedi_send_iscsi_text(struct qedi_conn *qedi_conn,
 			 struct iscsi_task *task);
 int qedi_send_iscsi_nopout(struct qedi_conn *qedi_conn,

drivers/scsi/qedi/qedi_iscsi.c

@@ -753,7 +753,7 @@ static int qedi_iscsi_send_generic_request(struct iscsi_task *task)
 		rc = qedi_send_iscsi_logout(qedi_conn, task);
 		break;
 	case ISCSI_OP_SCSI_TMFUNC:
-		rc = qedi_iscsi_abort_work(qedi_conn, task);
+		rc = qedi_send_iscsi_tmf(qedi_conn, task);
 		break;
 	case ISCSI_OP_TEXT:
 		rc = qedi_send_iscsi_text(qedi_conn, task);